OK, OK, menstrual blood has a certain distinct smell. You could catch the occasional funky whiff when changing pads but, trust us, it’s certainly not noticeable to others. As long as you shower regularly and change your pad often, no one should sniff you out.

However, those near and dear to you may notice that you get period-related mood swings or tiredness. So if someone asks if it’s that time of the month, it ain’t the nose that knows.